We just submitted our new paper on the fast flame supersonic regime in gases. A pre-print , along with the high speed videos , are available on ArXiv. Our work investigates the structure of fast supersonic turbulent flames typically observed as precursors to the onset of detonation. These high speed deflagrations are obtained after the interaction of a detonation wave with cylindrical obstacles. Two mixtures having the same propensity for local hot spot formation were considered, namely hydrogen-oxygen (2H 2 +O 2 ) and methane-oxygen (CH 4 +2O 2 ). We show that the methane mixture sustains turbulent fast flames, while the hydrogen mixture does not. An incident detonation wave in 2H 2 +O 2 coming from the left interacts with a row of cylinders. The subsequent fast flame, consisting of a system of discrete hot spots and transverse shock system, fails; the figure consists of an overlay of frames showing the evolution; See Video . A supersonic turbulent fast flame is es...
